School District · California
Mount Diablo Unified School District
📍 Concord, CA · Contra Costa County · NCES LEAID 0626370
Kindergarten – 12th
Grade Span
District Contact & InformationSource: NCES CCD 2024–25
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Grades Served
Kindergarten – 12th
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District Mailing Address
1936 Carlotta Dr., Concord, CA 94519
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Enrollment
29,201 students
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NCES District ID (LEAID)
0626370
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District Type
Public School District
Zip Codes Served by Mount Diablo Unified School District7 zip codes
Frequently Asked Questions
What zip codes are in Mount Diablo Unified School District?▼
Mount Diablo Unified School District serves 7 zip codes: 94517, 94518, 94519, 94520, 94521, 94523, 94598. Zip codes and district boundaries do not line up exactly, so confirm your exact address with the district office before you rely on an assignment.
How is Mount Diablo Unified School District rated?▼
Mount Diablo Unified School District has an overall rating of 7 out of 10 (Good), based on the share of students proficient in reading and math on state assessments (NCES EDFacts). That places it in the 60th percentile among California school districts. Ratings are percentile-ranked within California only and are not comparable across states.
How many students attend Mount Diablo Unified School District?▼
The NCES Common Core of Data directory reports enrollment of 29,201 students across 52 schools for Mount Diablo Unified School District.
What grades does Mount Diablo Unified School District serve?▼
Mount Diablo Unified School District is listed in the NCES directory as serving grades Kindergarten – 12th.
How do I contact Mount Diablo Unified School District?▼
You can reach Mount Diablo Unified School District by phone at (925)682-8000 or by mail at 1936 Carlotta Dr., Concord, CA 94519. Contact details come from the NCES district directory and are the best way to confirm which school your address is assigned to.
About Mount Diablo Unified School District
Mount Diablo Unified School District is a public school district serving 7 zip codes in California, primarily in Contra Costa County. It carries an overall rating of 7/10 (Good), the 60th percentile among California districts. That rating reflects the share of students proficient in reading and math on state assessments (NCES EDFacts, 2021–22 for most districts with a 2017–18 fallback for the rest) and is ranked only against other California districts — scores are not comparable between states. Directory details on this page come from the NCES Common Core of Data, 2024–25.
District boundaries are address-specific and do not follow zip code lines exactly — a single zip code can
be split between two or more districts. Use the zip codes listed above as a starting point, then confirm your
assignment with the district office at (925)682-8000 before making a housing decision.